Temperature-Dependent Extinction Coefficients and Solid Thermal Conductivities of Glass Fiber Insulations

  • H. Reiss
  • B. Ziegenbein


An experimental method has been derived for determining temperature-dependent total extinction coefficients and solid conductivities from measured total thermal conductivities of glass fiber insulations. The method uses a stationary calorimetric measurement of thermal conductivities at temperatures 100 ≤ T ≤ 430°C and a simultaneous measurement of the temperature profile within the insulation. Experimental data were fitted by calculated temperature profiles using the diffusion model for combined radiative/solid conduction and assuming linear temperature-dependent values of extinction and solid conductivity.


Effective Thermal Conductivity Total Thermal Conductivity Guard Ring Solid Conductivity Insulation Sample 
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Copyright information

© Purdue Research Foundation 1985

Authors and Affiliations

  • H. Reiss
    • 1
  • B. Ziegenbein
    • 1
  1. 1.Central Research LaboratoryBrown, Boveri & Cie AG.HeidelbergGermany

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